Page 3 - Parker - JIS Fittings

4300 Catalog JIS Fittings

JIS Fittings

Parker introduced Japanese Industrial Standard (JIS) adapters
in the early 1990s to address market requirements for OEM and
replacement fittings. These fittings are typically used as hose
adapters on equipment designed and/or manufactured in Japan
and Korea. Parker’s JIS adapters are designed with 30° flare and
60° cone connections and typically incorporate BSP threads.
Parker JIS adapters are designed with BSPP and BSPT port
ends and two styles of hose ends: T4 (30° flare, BSPP threads)
and P4 (60° cone, BSPP threads). Two additional Parker series
of fittings, KA (Komatsu flare) and K4 (BS B5200) adapters,
are similar to JIS style fittings and appear in sections I and J
of this catalog.
The T4 and P4 interfaces, as shown in Fig. H1, provide end user
flexibility of connecting to the most common Parker hose ends Fig. H1 – JIS T4 and P4 Interfaces
available as listed in Table H1.
Parker’s JIS adapter offering that uses the BSPP port connection
are manufactured in accordance with the JIS B2351 type “O” Adapter Mating Parker Hose
port connection which is commonly used for higher pressure Connection End Fitting Series
systems. Fig. H2 illustrates this port connection and Table H2 P4 / P46 UT, GU, G1, G2
shows appropriate JIS B2351 O-rings and dash sizes. T4 / T46 FU

It should be noted that Parker offers two very similar cone style Table H1 – Parker JIS Fittings Hose
BSPP adapters — P4 and K4. Parker’s K4 (60 cone, BSPP) fit- Adaptability
tings conform to BS5200, while Parker’s JIS cone adapters meet
JIS B8363 specifications. These fittings, while very similar, JIS B0202 (BSPP) Threads
are not interchangeable. See the I section of this catalog for
more specific information on their differences.

Design and Construction
Construction: Shaped JIS adapters are manufactured from
a hot forged construction. Straight adapters are manufactured
from cold drawn barstock. JIS O-Ring
Threads: The standard JIS products are manufactured with the
thread forms listed below:

BSPP Threads: ISO 228-1 G, JIS B 0202, Fig. H2 – JIS B2351 Type
“O” Port Connection
BSPT Threads: ISO 7/1, JIS B 0203
Identification: All Parker JIS fittings are stamped with “JIS”
for positive identification and differentiation from similar style
fittings.
“G” Thread Port
BSPP per O-Ring
ISO 228-1
(See
Reference Locations JIS B 0202 Dash Pg. N6)
Size
Dynamic Pressure Ratings: Please refer to the last column of 1/8-28 2 P8
part number tables located on the following pages of this section 1/4-19 4 P11
for the appropriate dynamic pressure ratings. 3/8-19 6 P14
Standard Material Specifications: Please refer to Table U1 1/2-14 8 P18
located in the Appendix section.
3/4-14 12 P24
1-11 16 P29
Table H2 – JIS B2351 Port
Threads and O-Rings as
shown in Fig. H2

Dimensions and pressures for reference only, subject to change.

H3 Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd